/* The contents of this file are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this file except in compliance with 
 * the License. You may obtain a copy of the License at 
 * http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * 
 * The Original Code is Libvoikko: Library of natural language processing tools.
 * The Initial Developer of the Original Code is Harri Pitkänen <hatapitk@iki.fi>.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *********************************************************************************/

using System;
using System.Text;
using System.Collections.Generic;
namespace libvoikko
{
	public static class ByteArray
	{
		public static string n2s(IntPtr ptr)
		{
			if (ptr == IntPtr.Zero)
			{
				return null;
			}
			List<byte> bytes = new List<byte>();
			unsafe
			{
				for (byte * p = (byte *) ptr; *p != 0; p++)
				{
					bytes.Add(*p);
				}
			}
			return n2s(bytes.ToArray());
		}
		
		public static string n2s(byte[] bytes)
		{
			if (bytes == null)
			{
				return null;
			}
			return Encoding.UTF8.GetString(bytes);
		}
		
		public static byte[] s2n(string str)
		{
			return s2encoding(str, Encoding.UTF8);
		}
		
		public static byte[] s2ansi(string str)
		{
			return s2encoding(str, Encoding.Default);
		}
		
		private static byte[] s2encoding(string str, Encoding encoding)
		{
			if (str == null)
			{
				return null;
			}
			return encoding.GetBytes(str + '\0');
		}
	}
}

